Walnut Petiole Gall

While taking pictures of Walnut Caterpillars, I noticed that the sometimes caterpillar-like Walnut Petiole Galls produced by an eriophyid mite are reaching their maximum size and becoming very evident on their namesake host. The galls are specific to black walnut and may occur on the petiole, rachis, and petiolules of the compound leaf.
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Authors
Joe Boggs

Walnut Cats on the Prowl

Walnut caterpillars are producing noticeable defoliation in southwest Ohio. The moth caterpillars feed in groups, or "colonies," of 10-30 individuals throughout their development which is why their defoliation is often focused on a single branch or a group of adjoining branches. However, it's also why multiple colonies can quickly defoliate small trees.
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Authors
Joe Boggs

An American Tail: the Lotus and its Caterpillar

If you're in Greater Cincinnati and have the chance visit the beautiful Glenwood Gardens [Great Parks of Hamilton County], grab a map at the main office and ask how to hike to the "Lotus Pond." It's a bit of a hike, but do what I did and wait until the afternoon temperature climbs above 90 F. and the humidity allows you to wear the air. Who needs a sauna?
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Authors
Joe Boggs

Asiatic Lilies Blooming Like Crazy in NE Ohio

As I was driving around, I kept seeing out of the corner of my eyes some brilliant flashes of color in various landscapes.  I kept wondering what I was seeing so I had to stop and identify what was creating those brilliant flashes.  I was pleasantly surprised to discover that the intense colors were plantings of Asiatic lilies.  The colors were so vivid and so diverse that it was almost impossible to walk by them and not notice them!

 

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Authors
Erik Draper

Boxwood Leafminer 2020 Prediction

Boxwood leafminer activity is already very evident on their namesake host in southwest Ohio. This does not bode well for 2020. As the midge fly leaf mining activity further delaminates the upper and lower leaf surfaces, symptoms may become apparent by the end of this season. They will certainly intensify next spring.
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Authors
Joe Boggs